Mount Bachelor is one of the best ski resorts in the country in my opinion. The mountain is a huge extinct volcano and has any terrain you want. They get lots and lots of snow and it's usually nice and dry. I have never experienced bad conditions there. The vertical is huge (over 3000 feet) and the views from the runs above the treeline are spectacular. The lifts are almost all high-speed quads and the system is very well designed. The lift lines are never bad, even on weekends. The terrain parks and superpipe are great.
Some people might complain that there isn't lodging or nightlife at the mountain, but Bend is close and has all that stuff. It's a real town too, not a cheesy yuppie ski resort village.
Bottom line: Bachelor rocks.